Flamenco in Sevilla

I don't know about the two locations you mentioned. I went to Pura Esencia (https://puraesenciaflamenco.com/en/). It's a very small venue, no one sitting in front of anyone else. It was brilliant. It's in Triana, right on the street that runs along the river, so maybe not as central a location, but that's an advantage, because it wasn't packed with tourists when I was there. Maybe ten or fifteen people in the audience.

CWSocial had a great trip to Southern Spain and saw quite a bit of flamenco. https://community.ricksteves.com/travel-forum/trip-reports/november-getaway-in-andalusia

I've been to shows at both places and they are very similar. Both small, intimate venues offering good performances. The seating is only a few rows and easy to see the performance, even if you are short. Casa del Flamenco also has a balcony, which looks down on the stage. Of the two, I probably prefer Casa de la Memoria, but you really can't go wrong with either one. Show up at least half an hour early to get the best seats.

I do not remember the name of the flamenco show that we saw, but it was performed on a raised platform that I was able to see very well at my 5'1" height. The seats were only about 4-5 deep and we were in the 3rd row. It was a real treat and I'm glad we went. The facial expressions on the woman, especially, communicated much.

I don't know how common impromptu flamenco performances are, but we were treated to one a few years later in the Plaza de Espana in Seville. It was free and a wonderful experience.

We did a show at the Museo del Baile Flamenco ( https://museodelbaileflamenco.com ) which was quite good. We also did a non-professional bar+flamenco down the street at La Carboneria. Definitely fun - both of them - in different ways.

And for the flamenco museum show, there were exhibits as well (included), and we also got there early enough we could pick our seats near the front center - but just a few seats to the side of the "sweat" splatter zone (eww?). Performers do build up quite a sweat, so the truly front and center seats (say the middle six) are likely to have a bit of that.

I'd begin by asking if you are aware how truly awful flamenco is? Think of fingernails being dragged down a blackboard. You'll be stuck in a hot, tiny room with caterwauling, occasional foot stomping and a weedy guitar player. I know we are meant to pretend to like it because it is "cultural". But, no it is dreadful.
When Sir Thomas Beecham said to try everythibg once except incest and folk dancing, he may have had flamenco in mind for the latter. Nevertheless, having said that, if you want to go I'd pick the shortest show which is nearest to your hotel. Preferably somewhere with a bar nearby , so you can get a drink to recover.

We too saw a flamenco performance at Plaza de Espana. It was fun, free and you can watch as much as you like…or not.

I'd begin by asking if you are aware how truly awful flamenco is?

Oh my. I truly love Flamenco. But I can understand that not everyone does. How truly awful to live in Sevilla and not like it!

If you go to La Carboneria bar and get there very early, you can sit at one of the communal tables, on the side of the table next to the railing, that directly overlooks the stage. You'll be watching from behind the performers, but you'll see everything. You do have to get there early - those places are taken early. I think I went an hour early, mid-week in November.

I went to Casa de la Memoria two nights in a row. That's how much I enjoyed the show there (and it was a different performance the second night).

We saw flamenco at the Casa de Guitarra, this venue does not sell drinks or dinners so it is all about the art. The guitar player was exceptional and showcased classical spanish guitar which was lovely. The female dancer was amazing but sadly, we did not see a male dancer which was our only knock on an otherwise great experience. I think overall all the shows in Seville are high quality as it is a competitive environment so all performers give it their all! Hotel Amadeus, where we stayed, had a musical theme with a kind staff, lovely hotel, a rooftop bar and small pool. With the extreme heat in Seville, taking a dip after a long hot walk is very refreshing! I will say never again will we travel in Spain in late summer..it was like being back in Texas, our home state!